@Leesy - Double and triple check the power cord for the device. In particular, make sure that you didn't inadvertently switch the cable with another device. I found I could reliably reproduce the...

For what it's worth, my C9 started doing this in the past week or so as well. Mine seems to have 'reboot episodes' 3 or 4x per day where it will reboot several times in a row in short order. I too...